Preparation of copper silver vanadium oxide from gamma-phase SVO starting material

摘要

The current invention relates to the preparation of an improved cathode active material for non-aqueous lithium electrochemical cell. In particular, the cathode active material comprises epsilon-phase silver vanadium oxide prepared by using a gamma-phase silver vanadium oxide starting material. The reaction of gamma-phase SVO with a silver salt produces the novel epsilon-phase SVO possessing a lower surface area than epsilon-phase SVO produced from vanadium oxide (V₂O₅) and a similar silver salt as starting materials. Consequently, the low surface area epsilon-phase SVO material provides an advantage in greater long-term stability in pulse dischargeable cells.